Bubble machine



FIG. 1 is a front, top perspective view of a bubble machine, showing my new design;

FIG. 2 is a rear, bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of detail “9” identified in FIG. 1 ; and,

FIG. 10 is an enlarged view of detail “10” identified in FIG. 7 .

The dashed lines in the figures illustrate portions of the bubble machine that form no part of the claimed design. The dash dot dash lines in FIGS. 1, 7, 9 and 10 are for the purpose of illustrating the enlarged view indicators and form no part of the claimed design. 

CLAIM The ornamental design for a bubble machine, as shown and described. 